Sock



FIG. 1 is a perspective view of a first embodiment of a sock showing our new design, the opposite side being a mirror image thereof;

FIG. 2 is a left side view thereof, the right side being a mirror image;

FIG. 3 is a top view thereof; and

FIG. 4 is a bottom view thereof.

FIG. 5 is a perspective view of a second embodiment of a sock showing our new design, the opposite side being a mirror image thereof;

FIG. 6 is a left side view thereof, the right side being a mirror image;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken line matter in all figures is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a sock, as shown and described. 